ubifs: Wire-up statx() support

statx() can report what flags a file has, expose flags that UBIFS
supports. Especially STATX_ATTR_COMPRESSED and STATX_ATTR_ENCRYPTED
can be interesting for userspace.

Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 15 insertions, 0 deletions

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 90a3f01c55d1..417fe0b29f23 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1644,6 +1644,21 @@ int ubifs_getattr(const struct path *path, struct kstat *stat,
         struct ubifs_inode *ui = ubifs_inode(inode);
 
         mutex_lock(&ui->ui_mutex);
+
+        if (ui->flags & UBIFS_APPEND_FL)
+                stat->attributes |= STATX_ATTR_APPEND;
+        if (ui->flags & UBIFS_COMPR_FL)
+                stat->attributes |= STATX_ATTR_COMPRESSED;
+        if (ui->flags & UBIFS_CRYPT_FL)
+                stat->attributes |= STATX_ATTR_ENCRYPTED;
+        if (ui->flags & UBIFS_IMMUTABLE_FL)
+                stat->attributes |= STATX_ATTR_IMMUTABLE;
+
+        stat->attributes_mask |= (STATX_ATTR_APPEND |
+                                STATX_ATTR_COMPRESSED |
+                                STATX_ATTR_ENCRYPTED |
+                                STATX_ATTR_IMMUTABLE);
+
         generic_fillattr(inode, stat);
         stat->blksize = UBIFS_BLOCK_SIZE;
         stat->size = ui->ui_size;